CVE-2003-1233 in Integrity Protection Driver
Summary
by MITRE
Pedestal Software Integrity Protection Driver (IPD) 1.3 and earlier allows privileged attackers, such as rootkits, to bypass file access restrictions to the Windows kernel by using the NtCreateSymbolicLinkObject function to create a symbolic link to (1) \Device\PhysicalMemory or (2) to a drive letter using the subst command.
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Analysis
by VulDB Data Team • 07/04/2017
The vulnerability described in CVE-2003-1233 represents a critical security flaw within the Pedestal Software Integrity Protection Driver version 1.3 and earlier implementations. This issue affects the Windows kernel's access control mechanisms and stems from improper handling of symbolic link creation operations. The vulnerability specifically targets the NtCreateSymbolicLinkObject function which is part of the Windows Native API, allowing malicious actors with elevated privileges to circumvent established security boundaries. The flaw exists in the driver's validation processes where it fails to properly restrict access to critical system resources through symbolic link manipulation. This represents a fundamental breakdown in the kernel's privilege separation model, where legitimate system operations can be subverted to gain unauthorized access to protected memory regions or file systems.
The technical exploitation of this vulnerability relies on two primary attack vectors that leverage Windows kernel internals and system administration commands. The first vector involves creating symbolic links to \Device\PhysicalMemory, which provides direct access to physical memory addresses within the kernel space. This allows attackers to bypass traditional memory protection mechanisms and potentially read or modify kernel data structures, leading to privilege escalation and system compromise. The second vector utilizes the subst command to create symbolic links to drive letters, effectively enabling attackers to manipulate the file system namespace and gain unauthorized access to restricted directories or files. Both attack methods exploit the lack of proper input validation and access control checks within the IPD driver's implementation of the NtCreateSymbolicLinkObject function. This vulnerability directly relates to CWE-264, which addresses permissions, privileges, and access controls, specifically focusing on insufficient privilege separation and inadequate access validation.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass comprehensive system compromise and potential data exfiltration capabilities. Attackers leveraging this flaw can effectively bypass the Windows kernel's security model, gaining access to memory regions that should be protected from user-space applications or even kernel-mode drivers. This creates an ideal environment for rootkit deployment where malicious code can hide from standard security tools while maintaining persistent access to system resources. The vulnerability also enables attackers to manipulate file system mappings through the subst command, potentially allowing them to redirect file access to malicious locations or access files that would normally be protected. Organizations running affected versions of the Pedestal Software IPD driver face significant risk exposure, as this vulnerability can be exploited by sophisticated malware or advanced persistent threats to establish footholds within their networks. The impact is particularly severe in enterprise environments where system integrity and access control are paramount for maintaining security boundaries.
Mitigation strategies for CVE-2003-1233 must address both the immediate vulnerability and broader security posture considerations. The primary recommendation involves upgrading to a patched version of the Pedestal Software Integrity Protection Driver that properly validates symbolic link creation requests and enforces appropriate access controls. System administrators should also implement strict monitoring of symbolic link creation activities through Windows Event logging and security auditing features. The use of kernel-mode drivers should be carefully reviewed and restricted to only those that are essential for system operation. Organizations should consider implementing additional security controls such as Windows Defender Application Control or similar technologies to prevent unauthorized driver loading. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and persistence through kernel-mode manipulation. Network segmentation and least privilege access controls should be enforced to limit the potential impact of successful exploitation. Regular security assessments and vulnerability scanning should be conducted to identify any remaining instances of the vulnerable driver version within the organization's infrastructure. The remediation process should also include comprehensive testing to ensure that the updated driver functions correctly without introducing compatibility issues with existing system components.